Mining machinery



W. W. ROBBINS.

mums MACHINERY.

APPLICATIO! FIL ED OCTFH, 1920.

1,392,59 Patented Oct. 4, 192-1.

2 SHEETS-SHEET I.

INVENTOR a? Wm Hi5 ATTORNEYS W. W. ROBBINS.

NHNING MACHINERY.

APPLICATION HLED ocr.|1, 192o.

1,392,598. Y Patented 001:.4, 1921 2 SHEETS-SHEET 2.

INVENTOR Hi5 ATTORNEYS UNITED STATES" IPOAT'ENTA OFFICE.

WILLIAM W. ROBBINS, F. LOIRAIN, OHIO.

MINING MACHINERY.

T 0 all whom it may concern: I

Be it known that I, WILLIAM W. ROBBINS, a citizen of the United States, residing at Lorain, in the county of Lorain and State of Ohio, have invented certain new and useful Improvements in Mining Machinery, and I do hereby declare the following to be a full,

, clear, and exact description of the inven-v tion, such as will enable others skilled in the art to'which it appertains to make and use the same.

My invention relates to improvements in mining machinery, and more particularly it relates to mining machinery of the power operated type.

Among the objects of my invention, are the following To provide a power operated mining machine in which ahollow tool is thrust directly into the walls of the mine, with the result that the inner chamber of the tool is charged with the material being mined.

To provide a machine of the above'character in which the tool is withdrawn by power. v To provide a machine of the above character, in which when the machine is withdrawn, the material being mined is automatically discharged from the chamber with the tool.

Another object of my invention is to provide certain details of improvement tending z to increase the efiiciency and serviceability the mine, the rails 2 of which I have shown.

This track runs substantially parallel with the walls in the mine from WlllCh the material is to be removed. On these rails, I run a car, having a platform A. On this platform, there is provided a track at rlght angles to the track 2 on the rails 3, which are also shown. Under the car A I provide a suitable motor B for running the car A along the track 2. Arranged to run on the track, I provide a car C provided with wheels 4. Underneath the platform 5 of Specification of Letters Patent.

this car, I provide a suitable motor D for moving the car C along the track on the platform A. On this platform, there are provided a pair of upright members 6 and 7 which serve as bearings for a cylinder E. This cylinder is provided with flanges 8 and 9 for preventing the cylinder E from sliding through the bearings 6 and 7 in a longitudinal direction.

Along the cylinder E, I provide also a set of gear teeth 10, meshing with a suitable pinion 11 underneath the cylinder E. This pinion is mounted on a shaft 12 provided with suitable bearings in the members 6 and p I Patented Oct. 4, 1921.- Application filed October 11, 1920. Serial No. 415,971.

13. The shaft 12 is arranged to be driven adapted to receive corresponding key guides 16 on the inner walls of the cylinder E. The details of this arrangement are more clearly shown in Fig. 3.

The plunger F is secured at its inner head 17 to a piston rod 18. Within the plunger F, there is provided a disk 19 mounted on the rods 20, which latter are secured to the left hand head ofthe cylinder E. I On the left hand end of the plunger 5 and in juxtaposition to the cylinder E, is provided a piston cylinder G, in which the piston 21 reciprocates. This cylinder G is mounted on the shelf 22, andsuitably secured thereto. For the purpose of'operating the piston, 1 provide a pipe 23, which pipe may lead to any suitable source of power, such as a water tank. This pipe branches off into two sections being provided with a valve 24 on one section and the valve 25 in the other section.

On-the opposite side of the cylinder G, I provide an exhaust pipe 26, in which unite a pair of exhaust branches, one with an exhaust valve 27 and the other with an exhaust valve 28.

Projecting to the rear of the car C, I provide a frame work H serving as a shoe. The object of this shoe is to make it possible to brace the car C against the beam 29, which beam may be secured in position in any suitable manner, as for example through the medium of a j ack-screw 30 between the floor and the ceiling of the mine.

With the means thus shown and described, it will be seen that I can place the car C in ing operation is to be conducted, then by properly manipulating the valves 24:, 25, 27 and 28, the giston 21 can be made to operate the plunger the material encompassed within the circumferential margin 31 of the plunger F is automatically dumps the material thuswithdrawn on the floor below, between the track 2 and the Wall. v

Under conditions where the material is not disengaged readily by the more for ward stroke ofthe plunger F, the process of disengagement is insured by the bringir'ig into play the motor 14. By operating this motor, the pinion 11 is operated thereby rotating the cylinder E, and consequently rotating the plunger F.

With reference to the forward edge 31, of

the plunger F, this cutting edge may be, of course, maintained sharpened as indicated in the drawing, to facilitate the digging op eraton. This edge may be sharpened from time to time, *as is needed. Of course in time the plunger F will become shortened, in which case, the plunger F may be replaced by a new one. a I

It will be understood also that if'desired, I may provide a conveyer of any suitable type such as of the endless belt typebetween the track 2 and the wall on the right, not shown, on to which the material from withinthe plunger F, may be caused to fall and automatically carried out.

What I claim as my invention is 1. In a mining machine, the combinaton of a piston, a cylinder therefor and-hydraulic means for operating said piston, a cylindrical mining tool on the end of said piston, and operated thereby back and forth, a cylinder within which said boring tool is adapted to reciprocate in a telescopical manner, bearings for said cylinder, a spline connection between the tool and the'cylinder,

so as to drive the plunger into the wall. WVhcn this takes place, of course drical mining to'ol'onithe end of said piston,

and operated thereby back and forth, a cylinder within which'saidboring tool is adapted to reciprocate in a telescopical manner, bearings for said cylinder, a splineconnection betweenthe tool and the cylinder,

whereby any rotary motion of the cylinder *1 is communicatedto the tool; a motor for rotating said cylinder whereby said tool I may also be rotated, .and a stationary disk relative to said cylinder held within-said tool, whereby theamaterial captured by the tool may be automatically dumped ou't of the tool. upon the return stroke of the tool. 3. In a mining machine, the combination of a piston, a cylinder therefor and hydraulic means for operating said piston, a cylindrical miningtool on the end of said piston, and operated thereby back and forth, a cylinder within which said boring tool is adapted to reciprocate in a telescoploal manner, bearings for said cylinder, a spline connection between the tool and the cylinder, wherebyany rotary motion of the cylinder is communicated to the tool"; a motor for rotating saidjc'ylinder whereby said tool may also be rot'ated and a stationary disk rela- .tive to. said cylinder held within said tool,

whereby the mater-ia'l captured by the tool may be automatically dumped out ofthe tool upon the return stroke of the tool, a

support for said disk, secured to the headof said second cylinder,sa'id itooltadap't'ed to reciprocate along the said support, said sup; port passing through the head of the tool to which the piston rod is connected.-

In witness whereof, I have hereunto signed my name this 25th day of September, 1920.

WILLIAM ROB-BINSW 

